#!/bin/bash

# 配置參數
NAMESPACE="default"
LIMITS_FILE="/path/to/resource_limits.yaml"
LOG_FILE="/var/log/k8s_resource_limits.log"

# 檢查并創建日志文件
if [ ! -f "$LOG_FILE" ]; then
  touch "$LOG_FILE"
fi

# 記錄日志函數
log() {
  echo "$(date +"%Y-%m-%d %H:%M:%S") - $1" >> "$LOG_FILE"
}

# 檢查資源限制文件是否存在
if [ ! -f "$LIMITS_FILE" ]; then
  log "Error: Resource limits file $LIMITS_FILE does not exist."
  exit 1
fi

# 應用資源限制
log "Applying resource limits to namespace $NAMESPACE..."
kubectl apply -f "$LIMITS_FILE" -n "$NAMESPACE"

if [ $? -eq 0 ]; then
  log "Resource limits applied successfully to namespace $NAMESPACE."
else
  log "Failed to apply resource limits to namespace $NAMESPACE. Please check the logs for details."
  exit 1
fi

# 檢查資源限制是否生效
log "Checking resource limits status..."
kubectl describe limits -n "$NAMESPACE"

log "Resource limits setup completed successfully."